Arthur Greenspan, Richards Kibbe & Orbe attorney photo

Arthur S. Greenspan

F:  917.344.8816


Arthur Greenspan is an experienced litigator who represents financial services and other corporate clients in high-stakes governmental and regulatory investigations and proceedings and in complex securities and other financial litigation, at both the trial and appellate levels. He also regularly represents board committees, directors and senior executives and professionals in both investigations and litigations, and amicus curiae parties in cases before the U.S. Supreme Court and other courts. more +

Mr. Greenspan has represented clients in investigations and proceedings of the United States Congress, the U.S. Department of Justice, the Securities and Exchange Commission, the Commodity Futures Trading Commission, the Board of Governors of the Federal Reserve System, the Office of the Comptroller of the Currency, the Office of the Attorney General of the State of New York and the Financial Industry Regulatory Authority. He also has extensive experience representing clients in federal and state courts and in arbitration proceedings.

His exemplary work and professionalism have earned him recognition as a top litigator and a leader within the legal community. He has been consistently recognized in New York Super Lawyers (2007-2019) in the areas of Securities Litigation and White Collar Criminal Defense. He is currently a Director of the Federal Bar Foundation and has served as a vice president of the Federal Bar Council (2011-2017) and president of the Federal Bar Council American Inn of Court (2009-2010).



  • Board committees of Iconix Brand Group in internal, SEC and DOJ investigations of revenue recognition and other accounting issues.
  • UniCredit S.p.A. in asset recovery litigation brought against former employee who embezzled funds from bank’s Shanghai branch.
  • Hedge fund in connection with insider trading and market manipulation allegations made by French financial markets authority.
  • Brokerage firm in internal investigation and potential regulatory investigation concerning possible insider trading.
  • J.P. Morgan Securities in industry-wide FINRA investigation concerning research analyst communications with issuers and sponsors in connection with IPOs.
  • Hedge fund in SEC investigation regarding collateralized debt obligations (CDOs) backed by subprime mortgage assets.
  • Public company board committee in internal investigation regarding allegations of insider trading made by an institutional shareholder.
  • Private equity funds in connection with internal investigation regarding management of real estate investments.
  • Wachovia Corporation in putative antitrust class actions alleging price-fixing conspiracy and manipulation in auction rate securities market.
  • Securities firm in litigation with counterparty bank concerning disputed credit default swap in subprime mortgage-backed securities market.
  • Novartis Nutrition Company in DOJ investigation concerning alleged Medicare fraud in enteral nutrition industry.
  • Securities firm in SEC FCPA investigation concerning Latin American sovereign debt transactions.


  • Evandro dos Reis, Jr., former securities firm executive, in criminal investigation and prosecution based on third party’s theft of client funds.
  • Former senior executive of large financial institution in connection with DOJ, SEC, CFTC, Federal Reserve and Congressional investigations relating to trading losses in synthetic credit portfolio.
  • Christos Bagios, former Swiss private banker at UBS, in criminal investigation and prosecution alleging aiding and abetting of U.S. clients in evading taxes.
  • Former senior executives and traders at major securities firms in DOJ, SEC and NY AG investigations concerning residential mortgage-backed securities (RMBS) and CDOs.
  • Former head of bank's municipal derivatives sales desk in DOJ, SEC and OCC investigations concerning alleged anti-competitive practices in municipal derivatives market.
  • Executive at large manufacturing company in DOJ antitrust and FCPA investigations concerning marine hose industry.


  • Antitrust economists in brief addressing methodology for evaluating competitive impact of mergers, submitted to federal district court in Sprint/T-Mobile merger litigation.
  • Financial economists in brief addressing standards for evaluating efficiency of securities markets, submitted to U.S. Court of Appeals for Second Circuit in Petrobras securities litigation.
  • Former SEC officials in brief addressing policy and tolling arguments in connection with statute of limitations, submitted to U.S. Supreme Court in Gabelli v. SEC.
  • Former prosecutors in brief addressing systemic and unconstitutional deficiencies in state’s system for provision of legal services to indigent defendants, submitted to New York Court of Appeals in Hurrell-Harring v. State of New York.

Honors & Awards

Selected by Super Lawyers Magazine as a New York Super Lawyer in Securities Litigation and White Collar Criminal Defense (2007-2020)  

Professional & Community Affiliations

Director, Federal Bar Foundation (2019-Present)

Vice President, Federal Bar Council (2011-2017)

President, Federal Bar Council American Inn of Court (2009-2010)

Member, Committee on White Collar Criminal Litigation, New York State Bar Association




Practice Areas
  • Honorable John M. Walker, Jr., U.S. Court of Appeals for the Second Circuit, 1989-1990
  • Harvard Law School, J.D., magna cum laude, 1989
  • Princeton University, B.S.E., summa cum laude, 1986
Bar & Court Admissions
  • New York
  • United States District Court for the Southern District of New York
  • United States District Court for the Eastern District of New York
  • United States Court of Appeals for the Second Circuit
  • United States Supreme Court